2^(15) = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.

What is the sum of the digits of the number 2^(1000)?

Actually this is the simplest problem so far. A simple conversion to a String and an iteration is all that is needed.

numberString = str(2**1000) sum = 0 for number in numberString: sum += int(number) print sum

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